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Constant folding here is pointless, because InstructionSimplify

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(which does constant folding and more) is called a few lines
later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120042 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2010-11-23 20:24:21 +00:00
parent 13534672de
commit 0f827639df
1 changed files with 1 additions and 8 deletions
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9
lib/Transforms/Scalar/LoopUnswitch.cpp
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@@ -32,7 +32,6 @@
#include "llvm/DerivedTypes.h" #include "llvm/DerivedTypes.h"
#include "llvm/Function.h" #include "llvm/Function.h"
#include "llvm/Instructions.h" #include "llvm/Instructions.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/InlineCost.h" #include "llvm/Analysis/InlineCost.h"
#include "llvm/Analysis/InstructionSimplify.h" #include "llvm/Analysis/InstructionSimplify.h"
#include "llvm/Analysis/LoopInfo.h" #include "llvm/Analysis/LoopInfo.h"
@@ -969,13 +968,7 @@ void LoopUnswitch::SimplifyCode(std::vector<Instruction*> &Worklist, Loop *L) {
while (!Worklist.empty()) { while (!Worklist.empty()) {
Instruction *I = Worklist.back(); Instruction *I = Worklist.back();
Worklist.pop_back(); Worklist.pop_back();
// Simple constant folding.
if (Constant *C = ConstantFoldInstruction(I)) {
ReplaceUsesOfWith(I, C, Worklist, L, LPM);
continue;
}
// Simple DCE. // Simple DCE.
if (isInstructionTriviallyDead(I)) { if (isInstructionTriviallyDead(I)) {
DEBUG(dbgs() << "Remove dead instruction '" << *I); DEBUG(dbgs() << "Remove dead instruction '" << *I);